American Journal of Chemistry

Volume 2, Number 1 (2017) pp 1-7 doi 10.20448/812.2.1.1.7 | Research Articles

 

Comparison of Two Methods for The Determination of Vitamin C (Ascorbic Acid) in Some Fruits

Isam Eldin H. Elgailani 1 , Mohamed A. M. Gad-Elkareem 1 Elnoor A. A. Noh 1 Omer E. A. Adam 1 Ahmed M. A. Alghamdi 1 
1 Department of Chemistry, Faculty of Sciences and Arts at Baljurashi, Albaha University, Albaha, Saudi Arabia

Abstract

The present research deals with the comparison of the two methods for the determination of vitamin C (ascorbic acid) content in some fruits namely apples, oranges, lemons, tangerines and grapes. The fruits were collected from local market in Baljurashi city. Vitamin C content of fresh fruit were determined by titrimetric and spectrophotometric methods using potassium permenganate as a chromogenic reagent. The absorbance is measured spectrophotometrically at 530 nm. The titrimetric method was carried out by an iodimetric back-titration. The results obtained from this study revealed that there is no significant difference between the two methods, but the spectroscophotometric method has been preferred to determine the amount of vitamin C than the titrimetric method.

Keywords

Titrimetric Vitamin C Ascorbic acid Determination.

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